Icp MR5H5S18AKAAA Maratherm Heat Pump 15 SEER2 R-454B

Product Description

The INTERNATIONAL COMFORT PRODUCTS MR5H5S18AKAAA is a single-stage residential heat pump from the Maratherm product line, engineered around the R-454B low-GWP refrigerant and rated at 15 SEER2 under current DOE efficiency testing standards. Operating at a single-stage compression cycle, this outdoor condensing unit provides both heating and cooling to a connected air handler or furnace coil system. At 169 pounds, this is a substantial piece of outdoor equipment requiring proper slab or bracket mounting and adequate line-set sizing for R-454B service. Licensed HVAC technicians with A2L refrigerant certification handle installation and commissioning of this unit.

The MR5H5S18AKAAA is intended for residential split-system heat pump applications. The R-454B refrigerant classification as an A2L mildly flammable refrigerant requires installers to follow updated safety protocols and use equipment rated for A2L service. This unit suits new-construction and replacement installations where the system is matched to a compatible air handler or furnace coil. The 1-stage compressor design provides straightforward operation and simplified controls integration for standard residential thermostat configurations.

Key Features

• 15 SEER2 efficiency rating meets current DOE regional efficiency minimums for residential heat pumps
• R-454B refrigerant with significantly lower global warming potential compared to legacy R-410A systems
• Single-stage compressor operation for reliable, straightforward heating and cooling performance
• Maratherm product line under the ICP manufacturing umbrella for broad parts and service support
• Unit weight of 169 pounds requires appropriate structural mounting and two-person installation practice

Compatibility

Designed as an OEM-style residential split-system heat pump outdoor unit. Specific compatible air handler and indoor coil models were not included in available product data. Consult the Maratherm engineering submittal or ICP product documentation for approved matched-system combinations before specifying indoor equipment.

Installation Notes

Installation must be performed by a licensed HVAC technician holding EPA Section 608 certification and, for A2L refrigerants, any applicable A2L-specific handling training required by local jurisdiction. Disconnect all electrical power at the service disconnect and verify zero voltage before any wiring or refrigerant work. R-454B is classified A2L and requires A2L-rated recovery equipment, manifold gauges, and leak detection tools. Follow local mechanical and electrical codes, including NEC Article 440 for hermetic refrigerant motor-compressor circuits, for all electrical connections and overcurrent protection sizing.

Technical Specifications

• Refrigerant: R-454B
• SEER2 Rating: 15
• Compressor Stages: 1-Stage
• Product Type: Heat Pump
• Weight: 169 pounds

Standard Information

• Brand: INTERNATIONAL COMFORT PRODUCTS
• Manufacturer Part Number: MR5H5S18AKAAA